Driving-gear for motor-cars, &amp;c.



No. 856,703. PATBNTED JUNE 1 ,"1907.

LivER sEN."

DRIVING GEAR FOR MOTOR GARS, 8:0.

APPLIbATIoN nun HAB..26,1907.

his li ifil l LORENZ IVERSEN, OF PITTSBURG, PENNSYLVANIA.

DRIVlNG -GEAH FQFE SWO'lQWl- ZAHEEJ its.

Specification of Letters Patent.

Patented June 1 1, 190?.

Appliciitioufilcd March 25,1907. Serial No. 384,44

vented certain new and useful improvements in Driving-Gears for Motor-Cars and Other Services, of which the following is av specificattion.

One object of this invention is to provide a speerhchenging gear of the plai'ietary typo lormotor ears and other services, having more speed variations than are ordinarily ohtuinrilile from gears of this type.

A further object .is to arrange the-mechanism in compact form, and to so assemble it with relation to the differential or balance gears that all may be mounted on the axle or other driven shuft und be inclosed in c casing arranged at the juncture of the driving and driven nienihers.

In the accompanying drawings, Figure l is a sectional plan view of the improved mochunisin, one section of the inclosin'g casing having linen enioveil. Fig. 2 is a detail View oi the clutch operating mechanism, and Fig. s similar view of the clutch shoes. Fig. i is u detail view of a modified form of drive.

As the invention is here illustrated adepted for motor car use, I have shown a casing .2 mounted-on the tubular sleeve 3 which incloses the sections l and 4 of the rear axle of a car. 5 is the casing which incloses the differential gearing, the latter operating axle parts 4 and 4. The gearing within this casing is of familiar construction and is not illustrated in detail as it forms no part of the invention. As well known, the diiicrential or balance gearing is employed to permit the ground wheels to rotate at different speeds, as when turning corners, reversing the position of the car, etc.

7 is the drive shaft carrying driving pinion 8, which shalt may be connected to the motor mechanism in any suitable manner. A portion of a brace, stay, or truss 9 is shown, which may extend from frame to some other art of the cor frame for holding frame 2 rigid Rotatoblo on axle i is the main driven wheel 10, having its inwardly facing periphoral rim cogged and moshing with drive gear 8, the rim being" also geared internally, as indicatod st 12. Secured to the inner portion of the hub of driven wheel 10 is the coggcd gear 13. Thus, internnl cogs end the ere Adi n lateral oll'set Her face of casing .ilsnge 14.

l ternal cogged gear 13 comprise the cogged elements of the resin driven wheel, which BFG'X ments are in dill'orent planes, gear 13 being the nearer to casing 5. Casing 5- carries the latterly projecting annular flange 14 which extends into wheel 10, traversing the planes oi cogged surfaces 1 2 and 13. The extremlty oi flange 14 is turned outwardly at 141 to forin u rim, to which is secured by rivets 15 6 5' and spacing sleeves 16 the ring 1'7, and jouriniled between this ring and the rim on spindles 8 are the planetary veers 19 which mesh with internal cogs 12 or wheel 10.

20 is s lJIiX-lil wheel and 21 the brake band thereof, which may be operated in any convenient manner l'Vheel 20 is formed with 0 which extends between riin l4 and gears .19 and is cogged exteriorly to mesh with the letter.

Journrilcd on casing 5 in the plane of and meshing with the externally geared surface 13 of wheel 10 are planetary gears 22, which extend through openings in flange 14 and mesh with the internally (logged part 23 of brake wheel 23, said coggod part being within brake who l 20 and forming e bearing therefor. 'lhus, broke wheels 20 and 23 are or ranged most compactly with their brakin surfaces side by side. 24 is the brake ban for wheel 23. Wheel 23 extends inward at :25 around gear casing 5 and is formed with the hub-like pair; cogged externally as shown.

Secured to casing 5 is disk 27. 28 is a ring secured to and spaced from the inner hice of dish 27 by rivets 29 and thimbles 30. Join-nailed between disk 27 and rin 28 are the differential gears 31, each mounts "on a spindle 32. Gears 31 mesh with part 26 of wheel 23, also with the in ternul co s on brake- 9 5 wheel 38, the letter surrounding isk 27 and partially overlapoing the/larger diameter of wheel 3 is the brake hand for wheel 33.

Pivot/ed at T5 to the inner r'ecoof iiioin driven wheel .10 the serni-circr1lsr brake" shoes 36 which. are adapted. to engage the ini The shoesfsre held normally drown inward and out of clutching engagement by spring 37, Botween the free ends oi the shoes 1s eccentric 38 carried by stem The letter is rotatal' secured to wheel 10, and at its outer end carries arm 40. A set screw 41 on. this zirnfi}; which re 'ulntes its throw, is adapted to engaged liy the shifting cone 42, and by this means eccentric 38 is turned for spreading shoes 36 and clutching flange tel, thereby snlt that the letter idly uniting the main driven wheel and gear casing 5. Cone may be operated by the oscillating fork -13 mounted in a suitable part 2 of tee casing, with an arm 44 con nected to the fork stem to which an actuating rod may be secured.

The operation is as follows: For the first or highest speed, the clutch mechanism is oper: ted as above described to rigidly connect the main driven wheel 10 with the gear cesing, thus making direct connection with the driving pinion 8. For the second highest speed, the clutch is released and brake wheel 26 is held from rotating by its brake band 21. Cog ed part '20 of wheel then becomes a fixed surface which. must be traversed by the planetary gears 19, the latter being actuated by the internal cogs 12 of the main driven wheel 10. Gears 19 carry with them and rotate flange 14 end the differential gear casing, and thus transmit to the shaft e slower speed than when it the wheel 10 ere directly connected by the clutch mechanism. the third or low speed, brake bend 21 is released and brake bend 2 itightened, thereby holding brelre Wheel from rotating. T his brings differential gears into play, parts 23 of brake wheel 23 being the fixed cog element which said gears must traverse, and cogs 18 of main driven gear 10 the driven element. Thus, the mechenisrnis driven at e slower speed than when differential gears 19 are active. F or reversing the driven mecl1 anisrn, brake bands 21 end 24 are slsckened, as is also the clutch mechanism, and brake band. 34: is tightened which holds brake wheel 33 from rotstin This last mentioned wheel then becomes the fixed cogged surface which is traversed by the differential gears 31, and the geared portion 26 of brake Wheel 28 becomes the movable or driven element, the motion being transmitted throughseid wh-el 23, and gears 22 to the cogged element 13 of the main driven wheel 10, with the reis driven in the reverse direction at a relatively low speed.

Each of the three sets of planetary gears here shown consists preferably of three gear wheels singed at egual distances apart, and the some is true Or spacing elements 15, and i6, 29 and 30 of 17 and 28, respectively.

By constructing and assembling the parts as here shown, the brake wheels and bends for controlling the mechanism are arranged in close proximity to each other and side by side, thus adding materially to the compact ness of the mechanism, all of which may be conveniently assembled and rendered op-v erative in comparatively smell space. Instead of actuating the main driven pinion by e bevel it, may be provided with sprocket teeth 45, Fig. to receive it drive chain,

While the invention is here shown and descenes scribed in connection with motor car use, it is not confined thereto.

I cle11n:-

1. The combination of a main driven wheel havin a cogged surface, a, driven shaft, a set of planetary gears carried by the latter and meshing'with the cogged surface of the drivenwheel, a brake Wheel having a cogged surface in mesh with the planetary gears, means for rigidly connecting the main driven Wheel and the driven shaft, and brake- Wheel holding means.

2. The combination of a main driven wheel having two cogged surfaces, a driven shaft, two sets of planetary gears rotatable therewith one for each of the cogged surfaces of the driven wheel, cogged brake Wheelsone in mesh with each set of planetsry gears, and brake-wheel holding means.

3. The combination of a mam driven Wheel having cogged surfaces, a driven shaft, sets of planetary 'gesrs carried by the shaft one set in mesh with each of said surfaces, overlapping brake wheels having their braking surfsces arranged side by side, each brake wheel having a cogged surface in mesh with a set of said planetary gears, and brake- Wheel holding means.

4. The combination of a main driven wheel having an internally co ged surface, a driven shaft extending through said Wheel, e casing mounted on the driven shaft, an ennular projection on. the casing concentric with the shaft and driven wheel and extending into the plane of the internal cogged surface of the letter, a set of planetary gears journsled on the annular projection and meshing with said internal cogged surface, clutch mechanism adapted to engage the projection for ri idly connecting it With the main driven whee a brake wheel having a cogged surface in mesh with the planetary gears, and brakewheel holding means.

5. The combination of a main driven wheel having an internally co god. surface, a driven shaft extending througi said wheel, a, part mounted on the shaft having an annuler extension projecting into the plane of said cogged surface, aset of planetary gears journo ed on the said extension and meshing with solidcogged surface, a brake Wheel having a cogged surface interposed between saidczetension and the planetary gears and meshing with the latter, clutch mechanism carried by the main driven wheel and adapted to engage the interior of said extension, and brake-wheel holding means.

6. The combination of a main driven Wheel having an internally cogged rim, a driven shaft extendin through said Wheel, a, part mounted on the silieft, an annular flange IOS LIE

projecting from said part into the driven.

wheel, a set of planetary gears on the exterior of the flange end journeled thereto end-mesh-- ing with the cogged rim of the driven Wheel, s

' posed between said flan e and the planetary gears. meshing with T 4 filme -w 3 andbrakew brake wheel having a cogged surface interthe latter, elutc I sm-carried by the main driven wheel age the interior of said eel holding means. i

hecombination of a main driven 8,61 ha. cogged surfaces of difi'erent diiven shaft extending through wheel, a; casing mounted on the shaft and ahange, a set 'of planetary gears jourhe flange and meshing with one of the cogged surface of said wheel, a brake wheel having a cogged surface meshin with said planetary gears, a second set of p anetary gears journaled on said casing and meshwheelhavin internall surfacesof ifferent ing with the. other cogged surface of the dr ven wheel, a brake w eel hav ng'a cogged surface in mesh with said second set of planetary ears, and brake-wheel holding means. 8. he combination of a main' driven and externally oogged iameters and in different planes, a driven shaft extending through the wheel, a casing mounted on the shaft, a

' flange on the casing traversing the planes of said ,colggedsurfn ces, a set of planetary 'ears jo'urna ed on theflan'ge and meshing wit the abrakewheel havinga eogged surface i ter- I posed between said flange and the planetary Y is gears and meshing with the latter, a second set of. planetary internally cogged surface of the driven Wheel,

'eoggedsurface interposed between the iirst l brake wheel and the second set of'planetar gears and neshing with the latter, and clutc 1 mechanism carried-by the driven wheel and H operative'in the plane of the first mentioned.

set of planetary gears for cn aging the casing flange, and 1ln'ake-wheel,holding means, T9; The non'ibination ofa main .driven:-l wheel h aving an externally ed shaft extending through the? mounted eai e a fasi b 'atla dsurface, a l

eena ca-sing, ea eries-e l j ournaled on the casing an d meshing with the exteriorly cogged surface of the driven wheel,

wheel having cogged surfaces, a driven shaft,

a diflerential gear easing mounted on the shaft, two sets of planetary gears carried by the gearcasihg -one set for each of the co 'ged surfaces of the driven wheel, two combined brake wheels and gears-one for each set of planetary gears, mechanism for rigidly-com necting the driven wheel and the said gear casing, and brake-wheel holding means.

11. The combination of a main driven wheel having cogged surfaces, a driven shaft, a differential gear casing mounted on the shaft, two sets of planetary gears carried by the ear c asing--- one for each co ged surface of the driven wheel, two com med brake wheels and gears one of the brake wheels extending around the periphery of saidgear casing and inward over oneside of the latter and at said inwardly extending portion provided with a eogged surface, a set of differentia'l gears meshing Withsaidlast mentioned cogged surface, a carrier rigid with the gear casing for the last mentioned that of difi'erential gears, a brake wheel having], a cogged surface for meshing with said last mentioned differential gears, and brake wheel holding means.

In testimony whereof I affix my signature in presence of two witnesses.

"LORENZQY ERSEN. Witnessesi J MA Nnsnrr, V

Jno, J. FITZGERALD, 

